jackylk commented on a change in pull request #3638: [CARBONDATA-3731] Avoid
data copy in Writer
URL: https://github.com/apache/carbondata/pull/3638#discussion_r387470422
##########
File path:
core/src/main/java/org/apache/carbondata/core/datastore/page/ColumnPage.java
##########
@@ -182,20 +190,18 @@ public static ColumnPage newPage(ColumnPageEncoderMeta
columnPageEncoderMeta, in
dataType == LONG ||
dataType == DataTypes.FLOAT ||
dataType == DataTypes.DOUBLE) {
- instance = new UnsafeFixLengthColumnPage(
- new ColumnPageEncoderMeta(columnSpec, dataType, compressorName),
pageSize);
+ instance = new UnsafeFixLengthColumnPage(columnPageEncoderMeta,
pageSize);
} else if (dataType == DataTypes.TIMESTAMP) {
instance = new UnsafeFixLengthColumnPage(
new ColumnPageEncoderMeta(columnSpec, LONG, compressorName),
pageSize);
} else if (DataTypes.isDecimal(dataType)) {
- instance = new UnsafeDecimalColumnPage(
- new ColumnPageEncoderMeta(columnSpec, dataType, compressorName),
pageSize);
- } else if (dataType == DataTypes.STRING
- || dataType == BYTE_ARRAY
- || dataType == DataTypes.VARCHAR
- || dataType == DataTypes.BINARY) {
- instance = new UnsafeVarLengthColumnPage(
- new ColumnPageEncoderMeta(columnSpec, dataType, compressorName),
pageSize);
+ instance = new UnsafeDecimalColumnPage(columnPageEncoderMeta,
pageSize);
+ } else if (dataType == DataTypes.STRING ||
+ dataType == DataTypes.VARCHAR ||
+ dataType == DataTypes.BINARY) {
+ instance = new ByteBufferColumnPage(columnPageEncoderMeta, pageSize);
+ } else if (dataType == BYTE_ARRAY) {
+ instance = new UnsafeVarLengthColumnPage(columnPageEncoderMeta,
pageSize);
Review comment:
It is not always for LV flow, for example, for local dictionary it uses
UnsafeFixLengthColumnPage with store data type as BYTE_ARRAY
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